[JS IR] Generate context dependent names for anonymous objects and classes.

js/js.translator/testData/box/classObject/contextDependentClassObjectName.kt

@@ -0,0 +1,15 @@
+class MyClass {
+    companion object {
+        fun ok(): String {
+            val okMaker = object {
+                fun getOk(): String = "OK"
+            }
+            return okMaker.getOk()
+        }
+    }
+}
+
+// CHECK_FUNCTION_EXISTS: MyClass$Companion$ok$okMaker$1 TARGET_BACKENDS=JS_IR
+fun box(): String {
+    return MyClass.ok()
+}